IGT Ink Rub tester

The IGT Ink Rub tester is an advanced instrument designed for automating the rubbing of a test strip with precise control over pressure, speed, and optional temperature. This process aids in evaluating the resistance to abrasion of prints, a crucial property for printed materials. The potential damage caused by abrasion during processing, transportation, storage, handling, or usage can lead to the degradation of image quality and readability of information.

This Ink Rub tester facilitates a systematic comparison of the abrasion resistance among various materials under carefully controlled conditions. Moreover, it offers versatility by accommodating weights for both higher and lower forces, and additionally provides options for heated weights (designated as article no. 510.200). This adaptability ensures a comprehensive assessment of material performance, making the Ink Rub tester a valuable tool for industries where print quality and durability are paramount.

General

Control paper, board and/or ink with regard to the following topics:
• abrasion resistance;
• smudging;
• effect of heat on these properties (optional).

Standards

Applicable standards: ASTM D5264, Tappi T 830. The IGT Ink Rub tester is fully compatible with the Finat FTM 27.

Principle

A printed sample is mounted on the rubber base pad, or, in case of heated testing, a silicon base pad.
• A sled with a blank receptor – same substrate as the printed sample – is brought into contact with the print

NOTE: When testing with heat, the sled (heated weight) does not have a receptor sample or a pad. In ‘hot
abrasion’ tests, the contact strips of the heated weight are in direct contact with the printed sample.

• The sled is moved from left to right and back over the print
• With known weight and pressure
• With controlled speed
• During a pre-set amount of cycles
• Under laboratory controlled conditions
• The difference in CIELab (Delta E) value before and after abrasion is a measure for assessment

Testing Conditions

Standard test atmosphere according to ISO 187 (23,0 ± 1,0 °C and 50 ± 2% RH).

Sample conditioning
Cut both printed samples and non-printed receptor samples with the help of the cutting templates and, if necessary, mark top/bottom as well as directional (MD/CD). Let all samples condition in the test atmosphere for at least 6 hours prior to testing. Be aware of the fact that a different way of conditioning of the samples can have influence on the results.